Internal-combustion-engine oil appliance



I. A. WEAVER INTERNAL COMBUSTION ENGINE OIL APPLIANCE July 27,1926. r 1,594,136

Filed Feb. 25. 1924 2 Sheet-Sheet 1 m 3 MM withassa zd zzfiz July 27,1926. A v

l. A. WEAVER '.INTERNAL COMBUSTION ENGINE OIL APPLIANCE Filed Feb. 25. 1924 2 Sheets-Sheet 2 76 car-Z ure'z'er Patented July 27,1926.

mm i mm:

IBA A. WEAVER; OFYYSPRINGFIELD, imam; Meme ew veelmimvm we ING-"COMPANY, or SPRINGFIELD, ILLINOIS, nconronnrro'u or rumors;

mrnRNAL-COMBUS ION-Erasingpinnrrnrniicn. I

Application filed February 25, 1924. seria1-mee5,04s.n

a It has been found to be desirable to cause a'free flow of lubricating. oil on the surfaces of the reciprocating pistons of internal-combustionengines and to remove such oil-before it has an opportunity to pass'zby the pistons into the combustion-chambers where is would become carbonized,foulthe spark-plugs, reduce the compression volume, and interfere with the properaction of the valves;

It has also beenl found to be of'merit to: prevent the combustion or ,fuel gases from: passing downwardly by the pistons intothe engine crank-case where s'theyzdilute and con.

taminate the lubricating oil; seriously de creasing its friction reducing vqualities.

The present invention relates 1 to simple means for effectively securing thedesired results in a very simple manner and without in any way interfering with the carburetion as by employing the suction of the intake manifold to-withdraw the oil andga'sesfrom around the pistons. v

jof one or "more grooves around the piston,

the piston is used to force out the contents and,i-after separation or reclamation -the withdrawn oil, is returned "to the engine crank-case andthe gases, if desired, may be delivered into the carbureter-intake.

In some cases, it is: of'advantageto subject suchgroove or grooves tos'uction during the intake stroke of the piston "to draw the oil-up around the piston and into or near; such groove or grooves andthis 1s1accom-" plished, in the preferred embodiment of the invention, by subjecting such groove or grooves to the suction in'the' combustionchamber during at least a part of the piston n I 1notor;w

intake stroke. I i I In the accompanying drawings illustrat- 'ing desirableand preferred embodiments of the invention, and throughout the" views ,of a

which like reference characters designate-the same parts, asingle engme or, motorcylnection to the crank-case of the motorbei'ng suflicient for the whole engine.

In {accordance with the principles of this invention, the pressure of the exploded'gases during a portion of the explosionstroke of;

1 In these drawings'zw:

I .v Figure 1 illustrates in section as or the.

embodimentsof the invention Figure 2-is afragmentary sectionlthroughthe cylinder side wall; and" Figure 3v is a view similarmtoFigurelt il iii-Figures 1 and 2"it-willbe perceived that lustrating a somewhat' mo'dified construc- "Referring'first to the'str-ucturedepicted the's'tructure comprises an internal-co1nbus'-* tion motor cylinder ll containing' thecustoma-ry reciprocatory piston 12 fitted near its topend with a plura-lity o'f piston ring's 13- in theusual, circumferential piston-ring piston 'has a shallow fluid and oil collecting groove 14: extended completelyaround it. Internally atione side vthe c-yllnder has a lengthwisegroove vl5 which; when thegpis ton is at or near [the limit of its'downward ton: with the groove 14 and with the shallow ai inular s-pace 16 between the lowermost p ston-ring and thefnext one above 1t;

A ta point diametricallyopposite the groove 15,,jtl1e motor cylinderhas a port or 0138111115117 extended"through its wall which when 'the piston is in: the position shown, connects-with1 theaftwo, circumferential channelsM and 16, suchp'ortbeing connected by a pipel8, equippedwith an'outwardly-opening or inwardly-closing check-valve 19 to I an internally bailied oil-trap or separatorQO which has a discharge 21 for the and a delivery pipe: 22, preferably equipped.

' with a trap 23 for returning the"recovered or reclaimed oil-to the crank-case 24c of the Assuming that :the cylinder and piston are being-lubricated"in any usual orapproved I strolm, temporarily or momentarily con necl's the combusti(m -chamber above the pisgases to flow to the intake of the carbureter manner, tas for example by the ordinary splash system, during the downward fuelintake stroke off-the piston a partial vacuum of subatm-ospheric pressure occurs in the cyllnde'r, chamber above ,the plston.

l Vhen' thepistonappro-aches or-is at its v lowermostposition of its stroke, its toplend' or head slides below theiu'pper end of the longitudinal cylinder :groove 15 thereby a me a submitting such groove, the two piston channels 14 and 16, and the pipe 18 to the partial vacuum causing the-automatic inward clos ing of such valve 19.

This suction or partial vacuum in the circumferential piston channels causes a free flow of'oil about.or.along,,the.,sur'face of similarly permits-the momentary opening or connection ofthe gr0ove15ltothe combustion-chamber andia small portiono f'the more or less'mspent' exploded gases-flow through :suclngro-ove, the :two piston r chana nels, the pipe 18, and past the now-open:

check-valve 19 into the trap 1 or separator where the oil laden gasesby contactwith. the series of baffles deposit-l their oil which returns E to the crank-case through: (the con ncction 22, 23, thegases-flowingon to-the;

carbureter intake-i through the; pipe :21.-

ln .thi-s waythecontents :of the: piston channels,including the oil andaany liquid or gaseous fuel or'combustion gases which have escaped downwardly" past thepiston rings, are blown. out: of: uch channelssand from the cylinder'through its port.

Thus the objectionable entrance of thev oil, lthough it is flowing freely on the-surface ofthe piston, into the combustion chamber is overcome and the dilution and contamination of the oil supply in the crank case is 'preventedby stopping the downward escape of fluids and'liquids past thevpistonrings into such crank-case.

In-some cases all-thatmay be requ-ired'or desired is the application of the pressure to the pistonchannel or-channels-'without subjecting-the latter to the suction or reduced atmospheric pressure.

In other cases, it may be preferred to install the new-system'avithouttaking out the pistons or internally longitudinally grooving the cylinders.

To meet both ofzthese conditions, I have provided the-easily installed system shown in detail in Figure 3.

In this structure, the parts are asin'the other instance, except that an unvalved-pipe channel 16whenthepistonis at or near the end of its downward stroke;

the descent of the piston the check-valve 29 In this device when suction or subatmospheric pressure occurs in the chamber above the piston,xfor example, during the intakestroke, as soon asthe port 26 is opened by closes so thattsuch suction is not exerted on the. circumferential piston-grooves.

On the other hand, however, when the portQG is uncovered by the descent of the piston, during its explosion or firing stroke,

nthen'the pressure.-, .greater than atmospheric pressure, transmitted through the pipe 25," the checlr valvee remaining open, to the two plStOn-TCl121iI1flllGlS,mOI"t0 only one of them, A asithe ease -may tbe,'usothattthewfluid' con tentsthereof are "forced; outtth'rough the. pipef28' into therseparator 20,1thegases" passing on: to Y the carbureter i11ta:ke ,-J the oil beinggreturned. automatically 'to xtlie. crankcase.v

The. showing :in these drawings is more: or less diagrammatic but it will suiiice'to give "a COIHPlGtGJ understanding of the invention wand its. variousbenefits and ad vantages Itzis to be 3 borne ini mind, however, that the invention. is. susceptible: of a variety of embodiments without departure fromits" fundamental :principlesand accordinglythe appended :claimsare' to be interpreted as-libera'lly; as ispermissible in view of the state of=thepriorrart Stated s somewhat: otherwise, manyv minor:- mechanical changes may be made in 1 the structure shown and described] without;ole-- parture: from the: heart and r essence of the invention and without; the: sacrifice? of any: ofits:substantial-benefits. I

1.- In an'internal-combustion engine,:the combination of? a cylinder,- a reciprocatory power piston l therein having a channel on i its-external curved surface, means to lubri cate said cylinderandpistonpmeans to: pere mit the 'contentszof said channel to be deliveredFtherefrom, and means to-subjectsaid channelintermittently to the pressure of theexplodedgases of' the engine to deliver the; contents of the channel= therefrom;-

2. In an;internal-combustionrengine, the-L combination of a cylinder, a recipro'catory power-piston therein havingya channel on'itsexternal curved 1 surface; means to lubricate said cylinder and piston, meansrto permit the contents'of-said channel-tobe'delivered therefrom,- :and .meansto subject said chan nel alternately to the pressure of: the era plo'cled 1 gases of the engine and to the intake suction of the engine;

3. Inan-internal-combustion engine, the T combination ofa cylindeiyua reciprocatory power piston thereinuhavinoy a transverse channel @on'its eXternalcurv-ed surface; means to lubricatesaidicylinder-and piston, means to permit the contents ofisaidichannelito be 33 delivered therefrom, means to open and close said delivery means, means to subject said channel at a point remote fromsa-id delivery means to a pressure above atmospheric when said delivery means is open, 'andmeans to subject said channel to"a pressure belovv atmospheric When said; delivery means is closed. JP

4. In; an internal-combustion engine, the

combination of a cylinder, a reciprocatory power piston therein having a channel on its external curved surface, means to lubri-v cate said cylinder and piston, means to permit the contents of said channel to be delivered therefrom, and means, independent of said delivery means, to alternately subject said channel to pressure above andbelovv atmospheric. a i

5. In an internal-combustion engine,uthe combination of a cylinder, .a reciprocatory piston therein having a channel on itsexternal curved surface, means to lubricate said cylinder and piston, means to p'ermlt the contents of said channel to be delivered therefrom, and means to intermittently con 7 .nect said piston channel with the cylinder chamber above the piston.

6. In an internal-combustion engine, the

combination of a cylinder, a reciprocatory piston therein having a channel on its external curved surface, means to permit the contents of said channel to be delivered therefrom, means to lubricate said piston and cylinder, and means to subject sa d channel alternately to the pressure of the exploded gases in the chamber above the piston and to the intake suction in said pressure of the exploded gases in the cylinder chamber above said piston.

piston therein having a channel on its external curved surface, means to lubricate said cylinder and piston, means to permit] the contents of said channel to be delivered therefrom, and means to intermlttently subject said piston channel to the subatmospheric intake pressure in the cylinder chamber above said piston.

charge port through itsiside vvall; at a dis tan'ce from said longitudinalgroove, av rec1procatory piston 111 said cyllnder havlng a channel on its external curved surface com v I i compartment of the engine. 8.'In an internal-combust on eng1ne,;the 'combmatlon of a cyllnder, a reciprocatory municating with said, cylinder discharge; port and With said cylinder groovewhen the head of the piston during itsdescent un-l covers' the uppemportion of said cylinder groove, and means to and piston.

dinal groove :in its inner face and a discharge port through its side Wall atr a dis tance from said'longitudinal groove, a reciprocatory piston in said cylinder having a channel on its external curved surface com- 'municating With said cylinder discharge I port and with said cylinder groove When the head of the piston during its descent un covers the upper portion of said cylinder groove, means to lubricatesaid cylinder and PlStOIl,-LI1(1 means to prevent air entering the cylinder chamber above the piston through said cylinder groove during the intake stroke of the piston. a I

11 In an internal combustion engine, the combination of a cylinder, a reciprocatory' piston therein having a channel on itsexternal curved surface, means to lubricate said cylinder and piston, means topermit the contents of said piston channelto-be delivered therefrom, means to intermittently subject said piston channel, toithe pressure of the exploded gases in the cylinder cham ber above thepiston, and means to conduct lubricate said cylinder 10. In an internal-combustion engine, the combination of a cylmcler having a longituat least a portion of the discharged contents from said channel to the intake of the carbureter associated with theengine', h

12. In an internal-combustion engine, the

combination of a cylinder, areciprocatory' piston therein having a. channel onlts external curved surface, means to lubricate said cylinder and piston, means to permit the contents of'said piston channel to be =de-o subject said pistonchannel to the pressureof the exploded gases in the cylinder chamberabove said piston, and means to conduct liveredtherefrom, means to intermittently l at least a portion of the discharged contents from said piston channel to the oil supply I 13. .In an internalcombustion engine, the;

combination of a cylinder, a' reciprocatory piston therein havinga channel on itsexternalcurved surface, means, to lubricate said cylinder and piston, means to perm1t the contents of said piston channel to be de livered'therefrom, means to intermittently subject said pistonchannel to the pressure of the exploded gases in the cylinder cham ber above said piston, means to separate the liquid and gaseous. ingredients of the discharged, contents of the piston channel,

gradients to the oil, supply compartment of the "engine, and means to convey the separated gaseous ingredients ,to the fuel lntake of the engine 14; In aninternal-coinbnstion engine, the combination of, a cylinder, a reeiproeatoi'y piston therein having a channel on its ex.- ternal curved surface, means to permit the contents of said channel to be delivered therefrom, means to lubricate said piston and cylinder 111651118 130 subject said channel alternately t0 the pressure of the exploded gases in the chamber, above thepiston and toithe'intal'ie suction in said chamber, means to-sepurate the liquid and; gaseous ingrejdi.- entsio'f the discharged-contents of. thez piston'. channel, means to convey the separated liq uidingredients to the --oil supply ieonipaintr inent oi the engine, vand meansto-eon'vey the; separated gaseous ingredients towthe fuel;

intake 1 of the engine.

In Witness whereof I have my hand:

Inn, A. WVEAMEB;

hereunto set 

